t.Log("WARNING: TestEncodeDecodeBatchJobKV Msgsize() is inaccurate")
	}

	vn := BatchJobKV{}
	err := msgp.Decode(&buf, &vn)
	if err != nil {
		t.Error(err)
	}

	buf.Reset()
	msgp.Encode(&buf, &v)
	err = msgp.NewReader(&buf).Skip()
	if err != nil {
		t.Error(err)
	}
}

func BenchmarkEncodeBatchJobKV(b *testing.B) {
	v := BatchJobKV{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)

// maximal values would occur quorum or more number of times.
func reduceErrs(errs []error, ignoredErrs []error) (maxCount int, maxErr error) {
	errorCounts := make(map[error]int)
	for _, err := range errs {
		if IsErrIgnored(err, ignoredErrs...) {
			continue
		}
		// Errors due to context cancellation may be wrapped - group them by context.Canceled.
		if errors.Is(err, context.Canceled) {
			errorCounts[context.Canceled]++
			continue
		}

		t.Log("WARNING: TestEncodeDecodeallTierStats Msgsize() is inaccurate")
	}

	vn := allTierStats{}
	err := msgp.Decode(&buf, &vn)
	if err != nil {
		t.Error(err)
	}

	buf.Reset()
	msgp.Encode(&buf, &v)
	err = msgp.NewReader(&buf).Skip()
	if err != nil {
		t.Error(err)
	}
}

func BenchmarkEncodeallTierStats(b *testing.B) {
	v := allTierStats{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)

	allPeerClients []*peerRESTClient // Includes nil client for self
}

// NotificationPeerErr returns error associated for a remote peer.
type NotificationPeerErr struct {
	Host xnet.Host // Remote host on which the rpc call was initiated
	Err  error     // Error returned by the remote peer for an rpc call
}

// A NotificationGroup is a collection of goroutines working on subtasks that are part of

	init             bool
	deadline         time.Duration
	outBlock         chan struct{}
	subroute         *subHandlerID
	respErr          atomic.Pointer[error]
}

// Response is a response from the server.
type Response struct {
	Msg []byte
	Err error
}

func newMuxClient(ctx context.Context, muxID uint64, parent *Connection) *muxClient {
	ctx, cancelFn := context.WithCancelCause(ctx)
	return &muxClient{

		t.Fatalf("should raise error when create users without languages reference")
	}

	if err := DB.Create(&user.Languages).Error; err != nil {
		t.Fatalf("no error should happen when create languages, but got %v", err)
	}

	if err := DB.Omit("Languages.*").Create(&user).Error; err != nil {
		t.Fatalf("no error should happen when create user when languages exists, but got %v", err)
	}

    assertThat(verticalValuesAccumulatorByAddAllPartitionedPairedStats.sampleCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(0.0);
    assertThat(constantValuesAccumulator.sampleCovariance()).isWithin(ALLOWED_ERROR).of(0.0);
    assertThat(constantValuesAccumulatorByAddAllPartitionedPairedStats.sampleCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(0.0);
  }

    assertThat(verticalValuesAccumulatorByAddAllPartitionedPairedStats.sampleCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(0.0);
    assertThat(constantValuesAccumulator.sampleCovariance()).isWithin(ALLOWED_ERROR).of(0.0);
    assertThat(constantValuesAccumulatorByAddAllPartitionedPairedStats.sampleCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(0.0);
  }

	return db.callbacks
}

// AddError add error to db
func (db *DB) AddError(err error) error {
	if err != nil {
		if db.Config.TranslateError {
			if errTranslator, ok := db.Dialector.(ErrorTranslator); ok {
				err = errTranslator.Translate(err)
			}
		}

		if db.Error == nil {
			db.Error = err
		} else {
			db.Error = fmt.Errorf("%v; %w", db.Error, err)
		}
	}
	return db.Error
}

// If ReadBytes encounters an error before finding a delimiter,
// it returns the data read before the error and the error itself (often io.EOF).
// ReadBytes returns err != nil if and only if the returned data does not end in
// delim.
// For simple uses, a Scanner may be more convenient.
func (b *Reader) ReadBytes(delim byte) ([]byte, error) {
	full, frag, n, err := b.collectFragments(delim)